Cooler for compressors.



No. 810,670. PATENTED JAN. 23, 1906. W. PRBLLWITZ.

COOLER FOR GOMPRESSORS.

APPLICATION FILED APR.14. 1903.

3 SHEETS-SHEET l 12212 55125 inueniar:

No. 810,670. PATENTED JAN. 23, 1906. W. PRELLWITZ.

COOLER FOR GOMPRESSORS.

APPLICATION FILED APR.14. 1903.

3 SHEETSSHEET 2.

- No. 810,670. PATENTED JAN. 23, 1906.

W. PRBLLWITZ.

COOLER FOR OOMPRESSORS.

APPLICATION FILED APR.14. 1903.

. 3 SHEETS-SHEET 3.

M/nesss: fill/01012- 49? M M y WW TNTTED STATES PATENT OFFICE.

WILLIAM PRELLWITZ, OF EASTON,

PENNSYLVANIA. ASSIGNOR To THE INGERSOLL-SERGEANT DRILL COMPANY, OF NEWYORK, N. Y., A CORPORATION OF WEST VIRGINIA.

COOLER FOR COMPRESSORS.

Specification of Letters Patent.

Patented Jan. 23, 1906.

A li ti fil d Apri1l4. 1903. Serial No. 152,582.

To aZZ whmn it may concern:

Be it known that I, WILLIAM PRELLWITZ, a citizen of the United States,and a resident of Easton, in the county of Northampton and State ofPennsylvania, have invented a new and useful Improvement in Coolers forCompressors, of which the following is a specification.

My invention relates to an improvement in coolers for air or gascompressors, and has for its objects to provide a structure in which thetubes are free to'expand and contract under different temperatures, inwhich access to the tubes may be obtained without taking them out of thecooler, and in which the tubes may be lifted out of the cooler by acomparatively short vertical movement.

A further object is to provide a vertical cooler in which the fluid ispermitted to drop as it cools while the water rises as it is heated,thus gaining the best effect of the water.

A practical embodiment of my invention is represented in theaccompanying drawings, in which Figure 1 represents the cooler in sideelevation. Fig. 2 is a vertical central section through the same. Fig. 3is a top plan view. Fig. 4 is an enlarged horizontal section taken inthe plane of the line AA of Fig. 2; and Fig.

5 1s an enlarged detail view of the lower tubeplate, water-head, andtubular guide for the same.

The cooler comprises a casing consisting of an upper air or gas inlethead 1, a lower air or gas discharge head 2,-an intermediate hexagonalbody portion 3, and a plurality of Watertubes 4, extending verticallythrough the said casing. The head 1 of the casing is provided with aninlet 5 for the air or gas, and the head 2 of the casing is providedwith an outlet 6 for the escape of the air or gas after it has beencooled. The hexagonal body portion 3 of the casing is provided with adownward extension 7, projecting into the interior of the chamber of thedischarge-head 2. A tubular guide 8 projects upwardly throughthe bottomof the discharge-head 2.

The stack of water-tubes 4 are permanently secured to a plate 9 at theirupper ends, preferably by expanding the tubes into the said plate. Thisplate rests upon the top of the head 1 of the casing and is surmountedby a water-outlet 10. Suitable bolts 11 serve to secure the water-outlet10 and the plate 9 to the head 1 of the casing. The lower ends of thetubes 4 are secured to a plate 12, preferably by expanding the tubesinto the said plate. This plate has an easy sliding fit within thetubular guide 8, so as to permit the tubes to expand and contract freelywithin the said guide. A water-inlet head 13 is secured to the plate 12by suitable bolts 14: around the periphery of the plate, to whichinlet-head 13 leads a suitable inlet-pipe 15.

The bottom of the tubular guide 8 is closed by a bottom plate 16 toprevent the escape of the air or gas which passes by the plate 12.Suitable bolts 17 serve to secure the flange of the plate 16 to thebottom of the tubular guide 8. This guide 8 also serves to steady thetubeplate at this point as well as guides the head in its movementsowing to the expansion and contraction of the tubes, thus-preventing thevibration of the said tubes.

The body portion 3 may be provided with a flange 18 and the dependingportion 7 with a flange 19 for the engagement of bolts 20 for securingthe said parts to the top of the lower head 2 of the casing.

It will be seen that by the above construction access to the lower endsof the tubes may be readily gained by removing the bolts 16 andwater-head 13 and access to the upper ends of the tubes may be gained byremoving the water-exit head 10. When it is desired to remove the tubes,it will be seen that by unbolting the flanges 18 and 19 from the lowerhead 2 of the casing the said tubes may be removed by a very shortvertical movement. This is extremely important in places where the headroom is limited.

It is evident that changes might be resorted to in the form,construction, and arrangement of the several parts without departingfrom the spirit and scope of my invention. Hence I do not Wish to limitmyself strictly to the structure herein set forth; but

What I claim is 1. A cooler for compressors comprising a stackofcooling-tubes, a casing therefor having an upper fluid-inlet head, alower fluid-discharge head, and a connecting body portion extended intothe interior of the fluid-discharge head about the portion of the stackof tubes extended therein and removably secured to the discharge-headwhereby the air is confined to the stack of tubes within thedischargebular guide projecting upwardly into the interior of thefluid-discharge head within which guide the lower end of the stack oftubes is fitted to slide.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of two Witnesses, this6th day of April, 1903.

WILLIAM PRELLWITZ.

Witnesses:

WARD RAYMOND, CHARLES MILLER.

